Photovoltaic cell, method for manufacturing same, and photovoltaic module

A photovoltaic module, comprising at least one cell string including a plurality of photovoltaic cells electrically connected, and wherein each of the plurality of photovoltaic cells includes:

• a silicon substrate;
• a first passivation layer formed on a front surface of the silicon substrate and including at least one first aluminum oxide layer;
• an anti-reflection layer formed on the first passivation layer;
• a second passivation layer formed over a rear surface of the silicon substrate and including at least one second aluminum oxide layer, wherein a thickness of the at least one second aluminum oxide layer is in a range of 4 nm to 20 nm;
• and
• at least one silicon oxynitride layer formed over the second passivation layer, wherein the at least one silicon oxynitride layer has a first number of silicon atoms, a second number of oxygen atoms, and a third number of nitrogen atoms, the first number is greater than the second number, the second number is greater than the third number, and a thickness of the at least one silicon oxynitride layer is in a range of 1 nm to 30 nm.